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21. 发明授权

US06423626B1 Removal of metal cusp for improved contact fill 有权
标题翻译：去除金属尖端以改善接触填充
公开(公告)号：US06423626B1
公开(公告)日：2002-07-23
申请号：US09334753
申请日：1999-06-16
申请人： Anand Srinivasan , Gurtej Sandhu , Sujit Sharan
发明人： Anand Srinivasan , Gurtej Sandhu , Sujit Sharan
IPC分类号： H01L214763
CPC分类号： H01L21/76865 , H01L21/76844 , H01L21/76877 , H01L23/485 , H01L2924/0002 , H01L2924/00
摘要： Disclosed is a method for providing improved step coverage of contacts with conductive materials, and particularly metals. An initial conductive layer is deposited over an insulating layer either before or after contact opening formation. The deposition process tends to block the contact mouth with a metal overhang, or cusp. After both conductive layer deposition and contact formation a portion of the initial conductive layer is removed, thus removing at least a portion of the metal cusp and opening the contact mouth for further depositions. The invention has particular utility in connection with formation of metal plugs in high-aspect ratio contacts. Embodiments are disclosed wherein the cusp removal comprises mechanical planarization, etching with high viscosity chemicals, and facet etching.
摘要翻译：公开了一种用于提供与导电材料，特别是金属的接触的改进的台阶覆盖的方法。在接触开口形成之前或之后，在绝缘层上沉积初始导电层。沉积过程倾向于以金属悬垂或尖端阻塞接触嘴。在导电层沉积和接触形成两者之后，去除初始导电层的一部分，从而去除金属尖端的至少一部分并打开接触口以进一步沉积。本发明在高纵横比触点形成金属插头方面具有特殊的用途。公开了其中尖端去除包括机械平面化，用高粘度化学品蚀刻和小面蚀刻的实施例。

22. 发明申请

US20050056940A1 Masking structure having multiple layers including an amorphous carbon layer 有权
标题翻译：掩模结构具有包括无定形碳层的多层
公开(公告)号：US20050056940A1
公开(公告)日：2005-03-17
申请号：US10661100
申请日：2003-09-12
申请人： Gurtej Sandhu , Zhiping Yin , Weimin Li
发明人： Gurtej Sandhu , Zhiping Yin , Weimin Li
IPC分类号： H01L21/033 , H01L21/308 , H01L21/311 , H01L21/3213 , H01L21/8242 , H01L29/40
CPC分类号： H01L21/3081 , H01L21/0332 , H01L21/31144 , H01L21/32139 , H01L27/10852
摘要： A masking structure having multiple layers is formed. The masking structure includes an amorphous carbon layer and a cap layer formed over the amorphous carbon layer. The amorphous carbon layer includes transparent amorphous carbon. The cap layer includes non-oxide materials. The masking structure may be used as a mask in an etching process during fabrication of semiconductor devices.
摘要翻译：形成具有多层的掩模结构。掩模结构包括无定形碳层和形成在无定形碳层上的盖层。无定形碳层包括透明无定形碳。盖层包括非氧化物材料。在半导体器件的制造期间，掩模结构可以用作蚀刻工艺中的掩模。

23. 发明申请

US20050011449A1 Gas delivery system for deposition processes, and methods of using same 审中-公开
标题翻译：用于沉积工艺的气体输送系统及其使用方法
公开(公告)号：US20050011449A1
公开(公告)日：2005-01-20
申请号：US10916918
申请日：2004-08-12
申请人： Weimin Li , Neal Rueger , Li Li , Ross Dando , Kevin Hamer , Allen Mardian , Gurtej Sandhu
发明人： Weimin Li , Neal Rueger , Li Li , Ross Dando , Kevin Hamer , Allen Mardian , Gurtej Sandhu
IPC分类号： C23C16/44 , C23C16/455 , C23C16/507 , C23C16/00
CPC分类号： C23C16/45565 , C23C16/455 , C23C16/507
摘要： The present invention is generally directed to a novel gas delivery system for various deposition processes, and various methods of using same. In one illustrative embodiment, a deposition tool comprises a process chamber, a wafer stage adapted for holding a wafer positioned therein, and a gas delivery system positioned in the chamber above a position where a plasma will be generated in the chamber, wherein substantially all of a reactant gas is delivered into the chamber via the gas delivery system. In another illustrative embodiment, the reactant gas exiting the gas delivery system is directed so as to cover substantially all of an area defined by an upper surface of the wafer. In one illustrative embodiment, the method comprises positioning a wafer in a process chamber of a deposition tool, generating a plasma within the process chamber above the wafer, and forming a layer of material above the wafer by introducing substantially all of a reactant gas used to form the layer of material into the process chamber above the plasma via a gas delivery system positioned above the plasma. In another illustrative embodiment, the reactant gas exiting the gas delivery system is directed to cover substantially all of an area defined by an upper surface of the wafer.
摘要翻译：本发明一般涉及用于各种沉积工艺的新型气体输送系统及其使用方法。在一个说明性实施例中，沉积工具包括处理室，适于保持位于其中的晶片的晶片台，以及定位在室中的气体输送系统，其位于室内将产生等离子体的位置，其中基本上全部反应气体通过气体输送系统输送到室中。在另一说明性实施例中，离开气体输送系统的反应物气体被引导以覆盖由晶片的上表面限定的基本上所有的区域。在一个示例性实施例中，该方法包括将晶片定位在沉积工具的处理室中，在晶片上方的处理室内产生等离子体，并且通过将基本上所有的反应气体基本上引入到通过位于等离子体上方的气体输送系统将材料层形成在等离子体上方的处理室中。在另一示例性实施例中，离开气体输送系统的反应物气体被引导以覆盖由晶片的上表面限定的基本上所有的区域。

24. 发明申请

US20060205236A1 Intermediate semiconductor device structures using photopatternable, dielectric materials 有权
标题翻译：中间半导体器件结构使用光图案化的介电材料
公开(公告)号：US20060205236A1
公开(公告)日：2006-09-14
申请号：US11432739
申请日：2006-05-11
申请人： Weimin Li , Gurtej Sandhu
发明人： Weimin Li , Gurtej Sandhu
IPC分类号： H01L21/31 , H01L21/469 , B32B9/04
CPC分类号： G03F7/095 , G03F7/0757 , H01L21/02134 , H01L21/02137 , H01L21/02216 , H01L21/02222 , H01L21/02282 , H01L21/02348 , H01L21/311 , Y10T428/31663
摘要： A cap layer that enables a photopatternable, spin-on material to be used in the formation of semiconductor device structures at wavelengths that were previously unusable. The photopatternable, spin-on material is applied as a layer to a semiconductor substrate. The cap layer and a photoresist layer are each formed over the photopatternable layer. The cap layer absorbs or reflects radiation and protects the photopatternable layer from a first wavelength of radiation used in patterning the photoresist layer. The photopatternable, spin-on material is convertible to a silicon dioxide-based material upon exposure to a second wavelength of radiation.
摘要翻译：能够使光可图案化的旋涂材料用于以前不可用的波长形成半导体器件结构的盖层。将可光刻图案的旋涂材料作为层施加到半导体衬底。覆盖层和光致抗蚀剂层各自形成在光图案化层上。盖层吸收或反射辐射，并保护光致图案层免受用于图案化光致抗蚀剂层的第一波长的辐射。照射图案化的旋涂材料在暴露于第二波长辐射时可转换为二氧化硅基材料。

25. 发明申请

US20060076597A1 Methods for forming and integrated circuit structures containing ruthenium and tungsten containing layers 审中-公开
公开(公告)号：US20060076597A1
公开(公告)日：2006-04-13
申请号：US11235866
申请日：2005-09-26
申请人： Vishnu Agarwal , Garo Derderian , Gurtej Sandhu , Weimin Li , Mark Visokay , Cem Basceri , Sam Yang
发明人： Vishnu Agarwal , Garo Derderian , Gurtej Sandhu , Weimin Li , Mark Visokay , Cem Basceri , Sam Yang
IPC分类号： H01L29/94
CPC分类号： H01L28/84 , H01L21/02183 , H01L21/02197 , H01L21/31637 , H01L28/55 , H01L28/65
摘要： Capacitors having increased capacitance include an enhanced-surface-area (rough-surfaced) electrically conductive layer or other layers that are compatible with the high-dielectric constant materials. In one approach, an enhanced-surface-area electrically conductive layer for such capacitors is formed by processing a ruthenium oxide layer at high temperature at or above 500° C. and low pressure 75 torr or below, most desirably 5 torr or below, to produce a roughened ruthenium layer having a textured surface with a mean feature size of at least about 100 Angstroms. The initial ruthenium oxide layer may be provided by chemical vapor deposition techniques or sputtering techniques or the like. The layer may be formed over an underlying electrically conductive layer. The processing may be performed in an inert ambient or in a reducing ambient. A nitrogen-supplying ambient or nitrogen-supplying reducing ambient may be used during the processing or afterwards to passivate the ruthenium for improved compatibility with high-dielectric-constant dielectric materials. Processing in an oxidizing ambient may also be performed to passivate the roughened layer. The roughened layer of ruthenium may be used to form an enhanced-surface-area electrically conductive layer. The resulting enhanced-surface-area electrically conductive layer may form a plate of a storage capacitor in an integrated circuit, such as in a memory cell of a DRAM or the like. In another approach, a tungsten nitride layer is provided as an first electrode of such a capacitor. The capacitor, or at least the tungsten nitride layer, is annealed to increase the capacitance of the capacitor.

26. 发明申请

US20060035471A1 Method of depositing a silicon dioxide comprising layer doped with at least one of P, B and Ge 有权
标题翻译：沉积掺杂有P，B和Ge中的至少一种的包含二氧化硅的层的方法
公开(公告)号：US20060035471A1
公开(公告)日：2006-02-16
申请号：US11204509
申请日：2005-08-16
申请人： Chris Hill , Weimin Li , Gurtej Sandhu
发明人： Chris Hill , Weimin Li , Gurtej Sandhu
IPC分类号： H01L21/336
CPC分类号： C23C16/45523 , C23C16/401 , H01L21/02126 , H01L21/02129 , H01L21/02271 , H01L21/31625
摘要： A substrate is positioned within a deposition chamber. At least two gaseous precursors are fed to the chamber which collectively comprise silicon, an oxidizer comprising oxygen and dopant which become part of the deposited doped silicon dioxide. The feeding is over at least two different time periods and under conditions effective to deposit a doped silicon dioxide layer on the substrate. The time periods and conditions are characterized by some period of time when one of said gaseous precursors comprising said dopant is flowed to the chamber in the substantial absence of flowing any of said oxidizer precursor. In one implementation, the time periods and conditions are effective to at least initially deposit a greater quantity of doped silicon dioxide within at least some gaps on the substrate as compared to any doped silicon dioxide deposited atop substrate structure which define said gaps.
摘要翻译：衬底位于沉积室内。将至少两种气体前体进料到共同包含硅的室，包含氧和掺杂剂的氧化剂成为沉积的掺杂二氧化硅的一部分。进料至少在两个不同的时间段内并且在有效沉积掺杂的二氧化硅层的条件下在基板上。时间段和条件的特征在于一段时间，其中一种所述包含所述掺杂剂的气态前体在基本上不流动任何所述氧化剂前体的情况下流动到所述室。在一个实施方案中，与沉积在限定所述间隙的衬底结构上的任何掺杂二氧化硅相比，时间段和条件有效地至少在衬底上的至少一些间隙内沉积更大量的掺杂二氧化硅。

27. 发明申请

US20060001175A1 Masking structure having multiple layers including an amorphous carbon layer 有权
标题翻译：掩模结构具有包括无定形碳层的多层
公开(公告)号：US20060001175A1
公开(公告)日：2006-01-05
申请号：US11215671
申请日：2005-08-30
申请人： Gurtej Sandhu , Zhiping Yin , Weimin Li
发明人： Gurtej Sandhu , Zhiping Yin , Weimin Li
IPC分类号： H01L23/48 , H01L23/52 , H01L29/40
CPC分类号： H01L21/3081 , H01L21/0332 , H01L21/31144 , H01L21/32139 , H01L27/10852
摘要： A masking structure having multiple layers is formed. The masking structure includes an amorphous carbon layer and a cap layer formed over the amorphous carbon layer. The amorphous carbon layer includes transparent amorphous carbon. The cap layer includes non-oxide materials. The masking structure may be used as a mask in an etching process during fabrication of semiconductor devices.
摘要翻译：形成具有多层的掩模结构。掩模结构包括无定形碳层和形成在无定形碳层上的盖层。无定形碳层包括透明无定形碳。盖层包括非氧化物材料。在半导体器件的制造期间，掩模结构可以用作蚀刻工艺中的掩模。

28. 发明申请

US20050196976A1 Methods of filling gaps using high density plasma chemical vapor deposition 有权
标题翻译：使用高密度等离子体化学气相沉积填充间隙的方法
公开(公告)号：US20050196976A1
公开(公告)日：2005-09-08
申请号：US11115854
申请日：2005-04-25
申请人： Neal Rueger , William Budge , Weimin Li , Gurtej Sandhu
发明人： Neal Rueger , William Budge , Weimin Li , Gurtej Sandhu
IPC分类号： C23C16/04 , C23C16/40 , H01L21/316 , H01L21/762 , H01L21/768 , H01L21/76 , H01L21/31 , H01L21/469
CPC分类号： H01L21/02274 , C23C16/045 , C23C16/401 , H01L21/02126 , H01L21/02164 , H01L21/02211 , H01L21/31612 , H01L21/31625 , H01L21/76224 , H01L21/76837
摘要： The invention includes a method of filling gaps in a semiconductor substrate. A substrate and a gas mixture containing at least one heavy-hydrogen compound are provided within a reaction chamber. The gas mixture is reacted to form a layer of material over the substrate by simultaneous deposition and etch of the layer. The layer of material fills the gap such that the material within the gap is essentially void-free. The invention includes a method of providing improved deposition rate uniformity. A material is deposited over a surface in the presence of at least one gas selected from the group consisting of D2, HD, DT, T2 and TH. The net deposition rate during the deposition has a degree of variance across the surface which is measurably improved relative to a corresponding degree of variance that occurs during deposition utilizing H2 under otherwise substantially identical conditions.
摘要翻译：本发明包括填充半导体衬底中的间隙的方法。在反应室内设置底物和含有至少一种重氢化合物的气体混合物。通过同时沉积和蚀刻该层，使气体混合物反应以在衬底上形成一层材料。材料层填充间隙，使得间隙内的材料基本上无空隙。本发明包括提供改进的沉积速率均匀性的方法。在选自由D 2，HD，DT，T 2和TH组成的组中的至少一种气体存在下，材料沉积在表面上。沉积期间的净沉积速率在整个表面上具有相对于在其它实质上相同的条件下利用H 2 N沉积期间发生的相应的变化程度可以显着改善的表面上的变化程度。

29. 发明申请

US20050064729A1 Methods of filling gaps and methods of depositing materials using high density plasma chemical vapor deposition 失效
标题翻译：填充间隙的方法和使用高密度等离子体化学气相沉积沉积材料的方法
公开(公告)号：US20050064729A1
公开(公告)日：2005-03-24
申请号：US10669671
申请日：2003-09-23
申请人： Neal Rueger , William Budge , Weimin Li , Gurtej Sandhu
发明人： Neal Rueger , William Budge , Weimin Li , Gurtej Sandhu
IPC分类号： C23C16/04 , C23C16/40 , H01L21/316 , H01L21/762 , H01L21/768 , H01L21/469
CPC分类号： H01L21/02274 , C23C16/045 , C23C16/401 , H01L21/02126 , H01L21/02164 , H01L21/02211 , H01L21/31612 , H01L21/31625 , H01L21/76224 , H01L21/76837
摘要： The invention includes a method of filling gaps in a semiconductor substrate. A substrate and a gas mixture containing at least one heavy-hydrogen compound are provided within a reaction chamber. The gas mixture is reacted to form a layer of material over the substrate by simultaneous deposition and etch of the layer. The layer of material fills the gap such that the material within the gap is essentially void-free. The invention includes a method of providing improved deposition rate uniformity. A material is deposited over a surface in the presence of at least one gas selected from the group consisting of D2, HD, DT, T2 and TH. The net deposition rate during the deposition has a degree of variance across the surface which is measurably improved relative to a corresponding degree of variance that occurs during deposition utilizing H2 under otherwise substantially identical conditions.
摘要翻译：本发明包括填充半导体衬底中的间隙的方法。在反应室内设置底物和含有至少一种重氢化合物的气体混合物。通过同时沉积和蚀刻该层，使气体混合物反应以在衬底上形成一层材料。材料层填充间隙，使得间隙内的材料基本上无空隙。本发明包括提供改进的沉积速率均匀性的方法。在选自由D2，HD，DT，T2和TH组成的组中的至少一种气体的存在下，在表面上沉积材料。沉积期间的净沉积速率在整个表面上具有相对于相对于在基本上相同的条件下利用H 2时沉积期间发生的相应的变化程度可以显着改善的表面的变化程度。

30. 发明申请

US20060172079A1 Methods of forming intermediate semiconductor device structures using spin-on, photopatternable, interlayer dielectric materials 有权
公开(公告)号：US20060172079A1
公开(公告)日：2006-08-03
申请号：US11391774
申请日：2006-03-29
申请人： Weimin Li , Gurtej Sandhu
发明人： Weimin Li , Gurtej Sandhu
IPC分类号： C08J7/04 , H01L21/31
CPC分类号： G03F7/095 , G03F7/0757 , H01L21/02134 , H01L21/02137 , H01L21/02216 , H01L21/02222 , H01L21/02282 , H01L21/02348 , H01L21/311 , Y10T428/31663
摘要： A cap layer that enables a photopatternable, spin-on material to be used in the formation of semiconductor device structures at wavelengths that were previously unusable. The photopatternable, spin-on material is applied as a layer to a semiconductor substrate. The cap layer and a photoresist layer are each formed over the photopatternable layer. The cap layer absorbs or reflects radiation and protects the photopatternable layer from a first wavelength of radiation used in patterning the photoresist layer. The photopatternable, spin-on material is convertible to a silicon dioxide-based material upon exposure to a second wavelength of radiation.

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